201001202210091 has 16 divisors (see below), whose sum is σ = 277358603904000. Its totient is φ = 129326153207328.

The previous prime is 201001202210021. The next prime is 201001202210099. The reversal of 201001202210091 is 190012202100102.

It is a de Polignac number, because none of the positive numbers 2^k-201001202210091 is a prime.

It is a super-2 number, since 2×201001202210091² (a number of 29 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (201001202210099) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 481316641 + ... + 481734066.

It is an arithmetic number, because the mean of its divisors is an integer number (17334912744000).

Almost surely, 2^{201001202210091} is an apocalyptic number.

201001202210091 is a deficient number, since it is larger than the sum of its proper divisors (76357401693909).

201001202210091 is a wasteful number, since it uses less digits than its factorization.

201001202210091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 963053138.

The product of its (nonzero) digits is 144, while the sum is 21.

Adding to 201001202210091 its reverse (190012202100102), we get a palindrome (391013404310193).

The spelling of 201001202210091 in words is "two hundred one trillion, one billion, two hundred two million, two hundred ten thousand, ninety-one".